Clutch throwout bearing



Sept. 7, 1943. DORMAN 2,328,895

CLUTCH THROW-OUT" BEARING Filed Nov. 1, 1940 1N VENTOR.

A TTORNEY5 Patentedjse it, 7;.1943

5 p n l 1. i i ev used fqrjcontrolling the coupling: bf npowk' pr example, from an engine tolla propeller or drive rected to the clutch throw-out bearing) point in the average automobile tea 't 'e lut h thr w-P b ing do s s m and i s embl de a v l oih utc thefclutch onpulling-the; shaft. V r i 2 It has been; a further n b" ct of the present inventorto provide a clutch throw-out'bearing hich; includesa removable section; or, insert providing clearanceso that the throw-out hear- ,shaftlaterally and may be secured in place; by

hearing.

selves; that is, the contact elements, lo ose'nfwi thin the supporting body of the'hearing and rotate, which actions hasten their destruction not only i h H h V W l 40e11allyjat 113;; 'Ifhe clutch comprises i a" fly ,wheel ecause ofheat resulting from friction;buthee ause of vibration resulting from loosenessi y within the beari ggb dyhj in? solving, ,t

pedient to mount the insert sectiofiflfsc thatf it and axial movementwithinthe body.

i which:

C 1 fi$ N This; invention relates to; clutches; of

shaft. j More particularly; the invention' is qi-r 'gClutch throweout hearingsuwear" out quite pidly I fact,.'m0 e t ledeve s atq h I i i qns r efie 15:10; ngl accordinglm will wear ;out ingtime or will.

ecome worn, forithenbearing elementitself is roken, p em; o lrle l ce n s-Te em y m tl lutch, hrew-ou Nannie-scor -p w y ncflr 1es-t e i rivs ha t: :vT er bIe i i v ous at the a m t be m nt 1 a lt e k ee th o i tj wth nser ti nv nt r r id a clutch :l' h wr i lbfi fili g which I i and drive; shaft without disassembling ing may beengaged upon or qisengaged. frornthe eans of a clamping bolt, liolcliru; thej reinoyable section firmly in the; clearance opening of the j other faii1tor n tiil rdwabiitbe fi g ifil ei 'r: rent use E is that thehearing elements them Accordingly, it has been a further objectcfthe 'present inventor to provide a bearing sleeve) ass flsembly which cannot rotatefl lqr n ovehxially ticular problem; the, inventor I has found?" it. ex-' jnot only functions to provide thefelearance ior assembly but also functions 15S} a keyfor. hold ing the main bearing section]againsti otation n xpl di w 1 ni j br vd h thr wn-ro 1: bea in sh w the ar ou gparts in gelevation. Fi ure sid wi h r b fin ig ure 51s a sec 1 en cl of the shaft; ,This usually re'quires dis a s-T tu aniiner e f y e men an ek b 14 The bearing elements preferably are made no lubrication; but itwill p understood that Luther" materials could,-;be utilized without de- 1 parting from the spirit ofthelinvention.

The collars is royidedewith the, conventional 1 studs for trunnion si IS 15, extending radially f rbni top -and botte1n;thereof, for engagement 30 we a. a

)1 and eperation by the yoke of 1 theisclutch; throwout fork"isliown'fraginentarily enly' at H5 in Figure ffik li "fl e en h'w i h th o ne'ctedpto the throw-out; collar is not apart of pr sent invention and, therefore is not I a in more detai h I nnnhnsa ia hodyingl the p esefnt invention isshown in FigureQG -Hem, a, clutch assembly is shown genactuated by cdua'rf as -sliclablecnthe -;driven discQoVercomingthe pressure ofthe'coil springs engagementof the throw-out bearing. It will beunderstood that the "clutch shown is typical ection al View v taken on line L4774 onal wet takii oh iiie' i-is tyni zil. utch illu a ng: ti e ronm g thr w-eut hearings t the tyD m Q n h ""of-a bronze graphite compeun'cljgthus, requiring 1 11.1 "Theflarn is fdisengage the clutch by separating the friction "plate fr Ill t1le fc lutch f Having described my invention, I claim z L of a nurnber of clutches which can be actuated by 'thethrow-out bearing disclosed here.

The ring element ll of the throw-out" bearing is countersunk in the collar, The collar is pro- ,vided with'a shoulder 28 against 'whichthe rear marginof the ring abuts when in place; The ring. is slotted as at 29 to correspond to the slot ID in the side of the collar 9. The replacee able'liey eleme'nt'l3 is adapted to vfit snugly in the slots, and the-key, collar, and'ring .are

splined. as (fat "30 (Figure 31?. I flThu s, after the ring is seated in the collar and the key element is slipped in place, the ring is locked" in its 5.88 11 against any movement, rotativegor axial. The.

face 3| of the ring projects'axiallytfromthecollar to provide for contact. Also'pthe face-ofi the key atits inner side is raised to correspon surface,

excessive heat developed--by frictionbetvveen the bearing and the throw-out sleeve. key :is

journalled at its'headed end in a boss 33 iri= the J l collar' andpassesthrough a hole in the ls e '(--Fig-' *ure '-4-) and -is threaded= -int'o"'-"another Preferably, a lock vvasher provided fo'r The cut out sections of the collar and r' g -"are 'Widen thanfthe driven shaft- 21, as shown in ot da-shdines' at 36 in Figure? Thus"; the bearing-'can be'removed and replaced' simply'by taking ou't the bolt I4 and removing-*theikfey -The ffbea-ring can then be unseated-and rehrove with.- -1- out disconnecting andrdroppingtne dr'ive'mshait.

' to the contour of the ring'so thatthe bearing When assembled presents a continuous, -,c(intact;- Several ventilating grooves 32 are provided in the face o'f 'the bearing to-conductaway locked-in place by t'he" bolt 14. The bolt is I,

- 25 face.

a collar constituting the body of the bearing, a bearing element, said bearing element and body including registering slots generally radially di s-' posed, a second bearing element disposed in said at right angles to the slots for holding said second'bearing element in position. p

3. A clutch throw-outbearing, comprising a body in the form of a collar, a bearing element "flxed'1in ith'e bore ofvthevcollareand projecting vaxiallylt'olp rovide smearing. surfaoe said body v and bearing element including a removable secition laterally of the bore thereof to permit as- A clutchf'fthrow-out bearing; comprising a collaradapted to be shif-ted along-a shaift said collar including a sleeves-element in the bore 1 tnereora-ana projecting" eaxially to -provide an l 13 Q'f ndwise bearing faceg a -"section of said sleeve and that a' bearing-of thi'sfinvention is in userwmout disturbing the, connection of :the forkjto' the 1 f- 'collar'or' thejwholebearing assemblycarr'lcereove'dfas a unit" ifn'e'cessary. "old-bearing icollar being-ofcast-iron, it'is j easily removed without disturbingthe-shaft-*or-- clutch 'jTh "esent invent-iongreatly- -sim'plifies the replacementor 'ai"newthrowfoutbearing} --urthermore;"the' kemfbeing dove-tailed with the c'ollar'and" with the ring, prevents any rotation 'bearing' thatis; the key'and" ringassembly, preferably are provided -with-a-loose slip fitjin the fcollar with"the*'bolt loose and the clearance 1 taken up when theboltisftiglitened. bearing "elements "are made of bronze; thereiis more probability of rotationj for bron ze eirpands and"-'contracts 'moref than other materials such fascairbon or graphite,"conventionally used for f." h'isvpurposez Thereforefihekey functionof the insert; is of-considerable imp r II A "throwout bearing forz-a clutch, compris ring: ;a .Lcollar sand bearing sections; .o'newf: :said

,ibearingysections consistingrof an element'may- =cd1l-ar seeingremovable for providing: "complete -clearance '-to -the bore of the collar;

6. utdh-' throut bearing' consisting'iof a -i35'}bodyofC'dllarfddrtn ludinga bore, a-bearing ele'lnient 'ofi circular f orm fixedin s'aid bore and exten ded' ax ially to provide'an endwise bearing face,

\i said collar-" an'd bearing including" a latrahslot,

entering-*to e' bbre of -the collar, the surfaces the bearing element and extended-tt provide therewitha completely continuous circularbear- --ing surface,-and' -1neans forclamping said insert -pdsinen, said means comprising a clamping t he" slot through 'the insert.

7, A clutch throwmut-bearing consisting of a bodyof collar' form'finoluding a 'borej'*abearing 'screwT- extending through the" collarandacross -extended' axially' to "provide? an endwise bjearing iace, said col lar and bearing includingfi'a lateral slot fentering the bore the *collar, an --insert fin'sertable iinto saidslot, said 'i nsertincluding" a portion formingca" section of the I bearing element and e ictended *to provide-=9; completely conortance with brenze "60 wdngsurfaces,parallel'with aeline takenadiametri- :callvzth oush the m ntor r i bo of t c a eamlfitt ns w t insresi inss t n th a e I event rotation of, theflother an gis ctiqn.

-andgother bearing section. and thereby consti f tutingi a. key,,to 1.p'r

2, A clutch throwgout bearin'gficonsisting'.of

-'t inuous circularbearing surfaceymeans to pre- 'v'ent' axial'displacementlofthe insert; 'and means for clamping said finsert'in' positiona'gainstbutwardnnovementf" 8. A throwwutfbearingffor a clutch compris "ingacdlla constitut l theibbv'dy of the bearing,

U -bearing elenient, isaidffbearing element "having :a'g'enerajlly radially" disposed s'lotftliereimlaibear- )7 fing lnsertirinj said slotgjsaid bearing; insert and ,"ibearrng'"element ;providirig. a ,sitiei'bearing .surace, "and means; for "retainin said "Ibea'ring'in- "serv in position invsai'd slot; V y'JAp KinwoonmAN;

'slots, and clamping means traversing the slots p bait, and a bushing section'delaterally-through the side 

